22021201200021 has 16 divisors (see below), whose sum is σ = 29843257171200. Its totient is φ = 14439978141120.

The previous prime is 22021201199971. The next prime is 22021201200127. The reversal of 22021201200021 is 12000210212022.

It is not a de Polignac number, because 22021201200021 - 2⁶ = 22021201199957 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22021201200521) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18078580 + ... + 19258178.

It is an arithmetic number, because the mean of its divisors is an integer number (1865203573200).

Almost surely, 2^{22021201200021} is an apocalyptic number.

It is an amenable number.

22021201200021 is a deficient number, since it is larger than the sum of its proper divisors (7822055971179).

22021201200021 is a wasteful number, since it uses less digits than its factorization.

22021201200021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1281676.

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 22021201200021 its reverse (12000210212022), we get a palindrome (34021411412043).

The spelling of 22021201200021 in words is "twenty-two trillion, twenty-one billion, two hundred one million, two hundred thousand, twenty-one".